Finding the Fourth Proportional to 9,382.78, 14,075.69 and 3,539.90

Step by Step Solution

1. Step 1: Write the proportion equation
   9,382.78 : 14,075.69 = 3,539.90 : x
2. Step 2: Convert to fraction form
   9,382.78/14,075.69 = 3,539.90/x
3. Step 3: Cross multiply
   9,382.78x = 14,075.69 × 3,539.90
4. Step 4: Simplify right side
   9,382.78x = 49,826,535.03
5. Step 5: Solve for x
   x = 49,826,535.03/9,382.78
6. Step 6: Final answer
   x = 5,310.42